/* -*- C++ -*-
 * Copyright ©2004 Hugo Mills <hugo@carfax.org.uk>
 *
 * This software is distributed under the terms of the GNU GPL v3
 * For more information on the GPL, see the file COPYING or 
 * visit http://www.gnu.org/
 *
 * This software is distributed without warranty
 */

#ifndef XFVIEW_H
#define XFVIEW_H

#include "magellan/vectors.h"
#include "magellan/configlexer.h"
#include "magellan/plugininfo.h"
#include "magellan/plugin.h"

class OutsideViewport { };
class RenderContext;

class XfView : public Plugin
{
public:
	XfView()
		: bottom_left(ivec2(0)),
		  top_right(ivec2(100)),
		  centre(ivec2(50)),
		  scale(50.0)
	{ }

	XfView(const ivec2& bl, const ivec2& tr, const ivec2& cn, double sc)
		: bottom_left(bl),
		  top_right(tr),
		  centre(cn),
		  scale(sc)
	{ }

	virtual bool f(ivec2&, const dvec2&) const;
	virtual bool g(dvec2&, const ivec2&) const;

	virtual int left(void) const { return bottom_left[0]; }
	virtual int bottom(void) const { return bottom_left[1]; }
	virtual int right(void) const { return top_right[0]; }
	virtual int top(void) const { return top_right[1]; }
	virtual double scaling(void) const { return scale; }

	static XfView* parse(ConfigLexer*, 
						 const std::string&, 
						 const std::string&);

	static PluginInfo* getmodules(int i);

protected:
	virtual ~XfView() { }

private:
	ivec2 bottom_left, top_right;
	ivec2 centre;
	double scale;

	void set_left(int);
	void set_bottom(int);

	friend class RenderContext;
};

#endif